private void HandleAlgorithmResult(Task task)
{
ButtonStop.Dispatcher?.Invoke(() => ButtonStop.IsEnabled = false);
var trainedNetwork = _algorithm.GetTrainedNeuralNetwork();
var testingData = _algorithm.DataSet[DataType.Testing];
var predictions = testingData.Attributes
.Select(testingDataAttribute => trainedNetwork.GetResult(testingDataAttribute).ToList())
.ToList();
RectangleDataGridTest.Dispatcher?.Invoke(() => RectangleDataGridTest.Visibility = Visibility.Visible);
DataGridTest.Dispatcher?.Invoke(() =>
{
DataGridHelper.SetTableData(DataGridTest, new TableData(predictions, testingData));
DataGridTest.Visibility = Visibility.Visible;
});
_algorithm = null;
ButtonStart.Dispatcher?.Invoke(() =>
{
ButtonStart.IsChecked = false;
ButtonStart.IsEnabled = true;
});
}
private void ButtonStartAlgorithm_Click(object sender, RoutedEventArgs e)
{
if (_algorithm != null)
{
var s = ((ToggleButton)sender).IsChecked;
_algorithm.IsPaused = !s ?? !_algorithm.IsPaused;
return;
}
RectangleDataGridTest.Dispatcher?.Invoke(() => RectangleDataGridTest.Visibility = Visibility.Collapsed);
DataGridTest.Dispatcher?.Invoke(() =>
{
DataGridTest.Visibility = Visibility.Collapsed;
});
AlgorithmErrorValues.Clear();
AlgorithmValidationValues.Clear();
var neuralNetwork = SmartGenAlgorithm.CreateNeuralNetwork();
var geneticAlgorithm = SmartGenAlgorithm.CreateGeneticAlgorithm(neuralNetwork.GetConnectionCount());
if (Settings.Default.InputLayerSize < Data.Attributes.First().Count)
{
var correlation = Correlation.GetCorrelation(Data);
Data = Data.RemoveLeastRelevantColumn(correlation, Settings.Default.InputLayerSize);
}
var dataSets = Data.SplitData(Settings.Default.TrainingRatio,
Settings.Default.TestRatio,
Settings.Default.ValidationRatio);
_algorithm = new SmartGenAlgorithm(geneticAlgorithm, neuralNetwork)
{
DataSet = dataSets,
ErrorTolerance = Settings.Default.ErrorTolerance,
MaxIterations = Settings.Default.MaxGenerationCount
};
_algorithm.IterationEvent += (iteration, error, validationError) =>
{
var current = DateTimeOffset.Now.ToUnixTimeMilliseconds();
if (current - _milliseconds < 500)
{
return;
}
_milliseconds = current;
AlgorithmErrorValues.Add(new ObservablePoint(iteration, error));
AlgorithmValidationValues.Add(new ObservablePoint(iteration, validationError));
if (AlgorithmErrorValues.Count <= 11)
{
return;
}
AlgorithmErrorValues.RemoveAt(0);
AlgorithmValidationValues.RemoveAt(0);
};
_algorithmTask = Task.Run(() => _algorithm.Run());
_algorithmTask.ContinueWith(HandleAlgorithmResult);
ButtonStop.IsEnabled = true;
}